Home / 16,818.20-25,227.30-5,131.40

Finding the Fourth Proportional to 16,818.20, 25,227.30 and 5,131.40

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Solution

The fourth proportional to 16,818.20, 25,227.30 and 5,131.40 is: 7,697.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,818.20 : 25,227.30 = 5,131.40 : x
  2. Step 2: Convert to fraction form
    16,818.20/25,227.30 = 5,131.40/x
  3. Step 3: Cross multiply
    16,818.20x = 25,227.30 × 5,131.40
  4. Step 4: Simplify right side
    16,818.20x = 129,451,367.22
  5. Step 5: Solve for x
    x = 129,451,367.22/16,818.20
  6. Step 6: Final answer
    x = 7,697.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.